| 摘要 |
<p>Provided is a thermal head wherein abrasion of an insulating protection film of a heating resistor formed on a partial glaze layer can be suppressed. A heating resistor (3) is provided on the partial glaze layer (2) provided on a ceramic substrate (1) in the longitudinal direction, and the entire surface including the heating resistor is covered by the insulating protection film (4). A level difference (t) is formed between the insulating protection film (4a) over the heating resistor and a flat portion (4b) of the insulating protection film over the area outside of the partial glaze layer (2). The level difference is set so that the insulating protection film on the heating resistor defines a higher portion and a platen roller can press thermal paper on the insulating protection film over the heating resistor and on the flat insulating protection film outside of the partial glaze layer. Thereby, the pressing force of the platen roller can be dispersed.</p> |
